Keihin 58 Main Universal JetRef : IH00091A / 1106133

KEIHIN Main Jet 58 — Manufacturer part number: 99101-116-0580

Original KEIHIN main jet, number 58, designed for fine tuning of carburetion. This replacement part is intended for carburetors equipped with interchangeable jets, allowing you to adjust the fuel flow at the main circuit to optimize the air/fuel mixture according to usage and conditions. Ideal for tuning, adjustments on a bench or on the road while searching for good mid-range and full throttle response.

• Usage: replaces the existing main jet to modify the mixture richness.
• Compatibility: suitable for Keihin carburetors that accept numbered jets; check the carb model before installation.
• Installation: screws in place of the original jet — disassembly of the carburetor body and prior cleaning of the jet well is required.
• Maintenance: keep clean (deposits and dirt disrupt atomization), use a carburetor cleaner and check float and needles during reassembly.
• Safety: after replacement, conduct gradual testing and check for leaks before any road use.

A simple yet crucial part for controlled carburetion — essential for any rider who tinkers with their carburetion or prepares their machine.